Identification_Information: Citation: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: Unpublished Material Title: Illinois Historical Aerial Photographs: 1936 to 1941 v.2 Edition: Version 2 (2006) Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Description: Abstract: This data set consists of historical black and white aerial photographs from Illinois acquired during 1936 to 1941. The original paper prints have been scanned and stored as TIFF format images. The online images available are MrSID format images in which the original TIFF files have been compressed at a target ratio of 12:1 with the exception of six counties. Gallatin, Hardin, Pope, Saline, Williamson and Winnebago Counties were compressed at a target ratio of 6:1. The original photographic paper prints are at a scale 1:20,000. Purpose: United States Department of Agriculture, Agricultural Adjustment Administration (USDA-AAA) aerial photographs are widely recognized as a unique and detailed record of the cultural and physical landscapes of Illinois. USDA-AAA photography is intensively used for diverse purposes by government agencies, surveyors, planners, consulting scientists, engineers and other individuals. These purposes include determination of past land uses, restoration of natural areas, assessing historical changes in stream dynamics, and a variety of other applications. These data have not been geometrically corrected. Supplemental_Information: HISTORY OF THE PROJECT: On May 12, 1933, President Franklin Roosevelt signed into law the Agricultural Adjustment Act, which was originally administered by the USDA-AAA. Since the mid-1930s, the USDA-AAA, now the USDA Farm Services Agency (USDA-FSA), periodically acquired nationwide aerial photographs by county. These aerial photographs were originally used by the USDA-AAA to assess the nation's agricultural lands and served as the basis for the national soil surveys. Statewide coverage of USDA-AAA aerial photographs was first achieved for Illinois from 1936 through 1941. Approximately 33,000 individual frames were acquired for complete coverage of the state. Negatives of the prints for Illinois, and 12 other states, were destroyed at the National Archives sometime during the 1970's. No formal reason has been given by the National Archives to explain the destruction of the negatives. One possibility could be deterioration and stability issues of the original 7-inch by 9-inch and 9-inch by 9-inch nitrocellulose (silver nitrate) negatives. The United States Navy and the National Archives made small-format copies of the negatives prior to the destruction of the original negatives. So far, the prints that project staff have encountered, that were made from these small-format copies, have been of extremely poor quality. Therefore, photographic paper prints made from the original large-format negatives are the best remaining representation of this aerial photography collection. Two, nearly complete, photographic paper print collections exist for Illinois. The first collection, originally at the Illinois Department of Natural Resources Office of Water Resources (IDNR OWR), is currently held at the Illinois State Library (ISL)). The second collection, is archived at the University of Illinois at Urbana Champaign (UIUC) Map and Geography Library. Smaller regional print collections are also located at many Illinois libraries and governmental agencies. None of the collections are complete, however, and only limited preservation efforts are in place to ensure the permanence of these print collections. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1936 Ending_Date: 1941 Currentness_Reference: publication date Status: Progress: In work Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -91.512817 East_Bounding_Coordinate: -87.483350 North_Bounding_Coordinate: 42.564692 South_Bounding_Coordinate: 36.911398 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: aerial Theme_Keyword: photography Theme_Keyword: historical Theme_Keyword: imagery Theme_Keyword: black and white Theme_Keyword: scanned Theme_Keyword: MrSID Theme_Keyword: TIFF Theme_Keyword: dpi Theme_Keyword: grayscale Theme_Keyword: United States Department of Agriculture Theme_Keyword: Agricultural Adjustment Administration Theme_Keyword: USDA Theme_Keyword: AAA Place: Place_Keyword_Thesaurus: none Place_Keyword: Illinois Place_Keyword: county Place_Keyword: Midwest Place_Keyword: Metro Area Place_Keyword: Great Lakes Place_Keyword: Champaign Place_Keyword: Chicago Place_Keyword: Peoria Place_Keyword: Rockford Place_Keyword: St. Louis Place_Keyword: Springfield Place_Keyword: Shawnee National Forest Stratum: Stratum_Keyword: ground surface Temporal: Temporal_Keyword_Thesaurus: none Temporal_Keyword: WWII Temporal_Keyword: World War II Temporal_Keyword: 1936 to 1941 Temporal_Keyword: pre-WWII Temporal_Keyword: pre-World War II Temporal_Keyword: 1936 Temporal_Keyword: 1937 Temporal_Keyword: 1938 Temporal_Keyword: 1939 Temporal_Keyword: 1940 Temporal_Keyword: 1941 Temporal_Keyword: 1930s Temporal_Keyword: 1940s Temporal_Keyword: Great Depression Temporal_Keyword: Dust Bowl Access_Constraints: none Use_Constraints: Reproduction or redistribution of copyrighted digital data sets or products derived there from outside of licensee organization or entity is expressly forbidden. The only exception is redistribution to consultants working for the licensee, and then only for purposes, related to work for the licensee. Such consultants may not further reproduce or redistribute these data sets. None of these data shall be electronically duplicated on magnetic or optical media for use by others, in whole or in part, without permission of the appropriate custodial division within the Illinois Department of Natural Resources (IDNR). Any hardcopies utilizing IDNR data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent IDNR data sets, nor to imply that changes they made were approved by IDNR. These data are not to be used for commercial profit. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Illinois State Geological Survey Contact_Position: Information Office Contact_Address: Address_Type: mailing and physical address Address: 615 East Peabody Drive City: Champaign State_or_Province: Illinois Postal_Code: 61820 Country: USA Contact_Voice_Telephone: 217-333-4747 Contact_TDD/TTY_Telephone: 217-785-0211 Contact_Facsimile_Telephone: 217-244-0802 Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time Data_Set_Credit: > Funding source: Institute of Museum and Library Sciences (IMLS) > Funding source: Illinois Department of Transportation (IDOT) > Funding source: Illinois Department of Natural Resources (IDNR) > Funding source: IDNR Office of Water Resources (IDNR OWR) > Funding source: United States Army Corps of Engineers (USACE) > Funding source: Illinois State Geological Survey (ISGS) > Funding source: Winnebago County Geographic Information System (WinGIS) > Funding source: Lake County Department of Planning, Building and Development > Data automation: Deette Lund, Sheena Beaverson, project staff > GIS processing: Deette Lund, Sheena Beaverson > Documentation: Deette Lund, Donald Luman > QA/QC: Deette Lund Native_Data_Set_Environment: PROJECT YEARS 2001-2005: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; MrSID Version 1.3.1. PROJECT YEARS 2005-2006: Microsoft Windows XP Professional Version 2002 Service Pack 2; MrSID Version 5.0.6.1088.Bob_1055_br Cross_Reference: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: Unpublished Material Title: Illinois Historical Aerial Photographs: County Index Data Layer Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Online_Linkage: Cross_Reference: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: Unpublished Material Title: Illinois Historical Aerial Photographs: Schematic County Indexes Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Online_Linkage: Cross_Reference: Citation_Information: Originator: Illinois State Geological Survey Publication_Date: Unpublished Material Title: Illinois Historical Aerial Photographs: Photo Mosaic County Indexes Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publication_Place: Champaign, Illinois Publisher: Illinois State Geological Survey Online_Linkage: Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: For information regarding the file naming conventions refer to the Entitiy_and_Attribute_Overview portion of this metadata. Logical_Consistency_Report: Not Applicable Completeness_Report: Not Applicable Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: These data have not been geometrically corrected. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: These data have not been orthorectified. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: USDA-AAA Publication_Date: Unpublished Material Title: Illinois Historical Aerial Photographs 1936 to 1941 Geospatial_Data_Presentation_Form: remote sensing image Publication_Information: Publication_Place: Springfield, Illinois Publisher: IDNR OWR Other_Citation_Details: Collection currently archived at the Illinois State Library (ISL) in Springfield, Illinois. Source_Scale_Denominator: 20,000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1936 Ending_Date: 1941 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Not Applicable Source_Contribution: Primary collection from which a majority of the historical aerial photographs were acquired. Source_Information: Source_Citation: Citation_Information: Originator: USDA-AAA Publication_Date: Unpublished Material Title: Illinois Historical Aerial Photographs 1936 to 1941 Geospatial_Data_Presentation_Form: remote sensing image Publication_Information: Publication_Place: Urbana, Illinois Publisher: UIUC Map and Geography Library Other_Citation_Details: Non-circulating collection. Source_Scale_Denominator: 20,000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1936 Ending_Date: 1941 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Not Applicable Source_Contribution: Secondary collection from which historical aerial photographs were acquired. This collection was used when photographs from the primary source at OWR were not available or in an unusable condition. Source_Information: Source_Citation: Citation_Information: Originator: USDA-AAA Publication_Date: Unpublished Material Title: Illinois Historical Aerial Photographs 1936 to 1941 Geospatial_Data_Presentation_Form: remote sensing image Publication_Information: Publication_Place: Peoria, Illinois Publisher: USDA FSA Source_Scale_Denominator: 20,000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1939 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Not Applicable Source_Contribution: Secondary collection from which historical aerial photographs were acquired. This collection was used when photographs from the primary source at OWR were not available or in an unusable condition. Source_Information: Source_Citation: Citation_Information: Originator: USDA-AAA Publication_Date: Unpublished Material Title: Illinois Historical Aerial Photographs 1936 to 1941 Geospatial_Data_Presentation_Form: remote sensing image Publication_Information: Publication_Place: Waukegan, Illinois Publisher: Lake County Planning Department Source_Scale_Denominator: 20,000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1939 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Not Applicable Source_Contribution: Secondary collection from which historical aerial photographs were acquired. This collection was used when photographs from the primary source at OWR were not available or in an unusable condition. Source_Information: Source_Citation: Citation_Information: Originator: USDA-AAA Publication_Date: Unpublished Material Title: Illinois Historical Aerial Photographs 1936 to 1941 Geospatial_Data_Presentation_Form: remote sensing image Publication_Information: Publication_Place: Carbondale, Illinois Publisher: Southern Illinois University Carbondale (SIUC) Morris Library Other_Citation_Details: Non-circulating collection. Source_Scale_Denominator: 20,000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1936 Ending_Date: 1941 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Not Applicable Source_Contribution: Secondary collection from which historical aerial photographs were acquired. This collection was used when photographs from the primary source at OWR were not available or in an unusable condition. Source_Information: Source_Citation: Citation_Information: Originator: USDA-AAA Publication_Date: Unpublished Material Title: Illinois Historical Aerial Photographs 1936 to 1941 Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publication_Place: Macomb, Illinois Publisher: Western Illinois University (WIU) Leslie F. Malpass Library Other_Citation_Details: Non-circulating collection. Source_Scale_Denominator: 20,000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1936 Ending_Date: 1941 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Not Applicable Source_Contribution: Secondary collection from which historical aerial photographs were acquired. This collection was used when photographs from the primary source at OWR were not available or in an unusable condition. Process_Step: Process_Description: PHOTO INVENTORY: A spreadsheet was created for each county containing information for each photograph, including digital file name, flight line, county name, USDA county code, roll and exposure numbers, agency which contributed the original photographic paper print for scanning, acquisition date, time flown (if available), CD-ROM on which the original file is stored at the ISGS, and any additional notes. These county tables were then joined to the attribute tables for the County Index Data Layer files. Process_Date: 2001-2006 Process_Step: Process_Description: SCANNING METHODOLOGY (2001-2004): This methodology was employed for 45 counties that were scanned between 2001 and 2004. These counties include Adams, Brown, Bureau, Calhoun, Cass, Champaign, Clark, Clinton, Coles, Cook, Cumberland, DuPage, Fulton, Greene, Grundy, Hancock, Jersey, Johnson, Kane, Kankakee, Kendall, Knox, Lake, LaSalle, Madison, Marshall, Mason, McHenry, Morgan, Monroe, Peoria, Pike, Pulaski, Putnam, St. Clair, Sangamon, Schuyler, Scott, Stark, Tazewell, Union, Vermilion, Washington, Will, and Woodford Counties. Quantitative testing of the image detail present on the paper emulsion of the prints was conducted to determine the optimum scanning resolution and grayscale range. It was found that little additional detail was gained by scanning at a resolution greater than above 750 dpi. An 8-bit grayscale range was sufficient to reproduce all of the information preserved upon each photographic paper print. If the original large-format film negatives were available, the images could have been digitized using higher dpi values at an increased grayscale range. It is also imperative that each print in the collection be digitized only once to ensure cost effectiveness and minimize the exposure of each photographic paper print to the stresses of transport, preparation, handling, and digitization. An objective evaluation of several scanning systems was performed through a series of tests using a standard 20-step density wedge, circular target, fine gridlines, and an original 1938 aerial photography paper print. Based upon the results of this analysis, a Crosfield 646 IE drum scanning system was selected for the digitization procedures. The Crosfield scanning system was found to best maintain the original grayscale range and geometry of the original photographic paper print. Digitization procedures for these 45 counties within the ILHAP project were conducted by Scantech Color Systems, Inc. of Champaign, Illinois. Photographs were scanned with the north direction oriented up. Counties flown west to east have annotation at the left side of the print. Counties flown north to south have annotation at the top of the print. The photographs possess an average of 60% endlap and 30% sidelap; adjacent photographs are suitable for stereoscopic viewing. Process_Date: 2001-2004 Process_Step: Process_Description: SCANNING METHODOLOGY (2005-2006): This methodology was employed for 6 counties that were scanned during 2005 and 2006. These counties include Gallatin, Hardin, Pope, Saline, Williamson, and Winnebago Counties. Due to a change in vendors a Crosfield Celsis 6200 drum scanning system was used for the digitization procedures. The Crosfield Celsis 6200 is an equipment upgrade from the Crosfield 646 that was used previously. The scanning quality remains the same. Digitization procedures for these six counties within the ILHAP project were conducted by Martin Graphics of Champaign, Illinois. Photographs were scanned with the north direction oriented up. Counties flown west to east have annotation at the left side of the print. Counties flown north to south have annotation at the top of the print. The photographs possess an average of 60% endlap and 30% sidelap; adjacent photographs are suitable for stereoscopic viewing. Process_Date: 2005-2006 Process_Step: Process_Description: IMAGE COMPRESSION (2003-2004): This methodology was employed for 45 counties that were scanned. These counties include Adams, Brown, Bureau, Calhoun, Cass, Champaign, Clark, Clinton, Coles, Cook, Cumberland, DuPage, Fulton, Greene, Grundy, Hancock, Jersey, Johnson, Kane, Kankakee, Kendall, Knox, Lake, LaSalle, Madison, Marshall, Mason, McHenry, Morgan, Monroe, Peoria, Pike, Pulaski, Putnam, St. Clair, Sangamon, Schuyler, Scott, Stark, Tazewell, Union, Vermilion, Washington, Will, and Woodford Counties. The original scanned files are archived in TIFF format on CD-ROM at the Illinois State Geological Survey. The files available for download have been compressed using LizardTech's GeoExpress (Solaris platform) MrSID version 1.3.1 software at a compression ratio of 12:1. No additional image processing will be imposed on these files to ensure the best preservation of existing feature details. Process_Date: 2003-2004 Process_Step: Process_Description: IMAGE COMPRESSION (2005-2006): This methodology was employed for 6 counties that were scanned. These counties include Gallatin, Hardin, Pope, Saline, Williamson, and Winnebago Counties. The original scanned files are archived in TIFF format on CD-ROM at the Illinois State Geological Survey. The files available for download have been compressed using LizardTech's GeoExpress (Solaris platform) MrSID Version 5.0.6.1088.Bob_1055_br software at a compression ratio of 6:1. No additional image processing will be imposed on these files to ensure the best preservation of existing feature details. Process_Date: 2006 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Local: Local_Description: These data are not geometrically corrected. Local_Georeference_Information: Not Applicable Geodetic_Model: Horizontal_Datum_Name: none Ellipsoid_Name: none Semi-major_Axis: none Denominator_of_Flattening_Ratio: none Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: These data have no entity attributes associated with them. There are however naming conventions that were applied to the file name based on annotations visible on the photos. Photographs were scanned with the north direction oriented up. Counties flown west to east have annotation at the left side of the print. Counties flown north to south have annotation at the top of the print. Naming conventions for the digital files include codes for county, film roll number, and exposure number; zeros are used as placeholders. Flight line information is not included in the file naming conventions or the annotations. Annotation example from file "0bwq04036.sid": 11-15-38 12:30 AAA SCALE 1:20,000 BWQ 4-36 >11-15-38 = date (November 15th, 1938) >12:30 = time (12:30 pm Central Standard Time) >AAA = abbreviation for Agricultural Adjustment Administration >SCALE 1:20,000 = scale > (1 unit on the photo equals 20,000 units on the ground) >BWQ = county code (BWQ represents Cook County) >4-36 = film roll-exposure number (film roll = 4, exposure = 36) Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Illinois State Geological Survey Contact_Position: Information Office Contact_Address: Address_Type: mailing and physical address Address: 615 East Peabody Drive City: Champaign State_or_Province: Illinois Postal_Code: 61820 Country: USA Contact_Voice_Telephone: 217-333-4747 Contact_TDD/TTY_Telephone: 217-785-0211 Contact_Facsimile_Telephone: 217-244-0802 Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time Resource_Description: MrSID format files are currently available free of charge at the Illinois Natural Resources Geospatial Data Clearinghouse for selected counties in Illinois. Refer to the Identification_Information portion of this file for access to downloadable data and metadata. Distribution_Liability: The Illinois Department of Natural Resources provides these geographic data "as is." IDNR makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. IDNR further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of IDNR, no warranty, expressed or implied, is made by IDNR regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the IDNR have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by IDNR. Metadata_Reference_Information: Metadata_Date: 20060811 Metadata_Review_Date: 20060811 Metadata_Future_Review_Date: 2007 Contact_Information: Contact_Organization_Primary: Contact_Organization: Illinois State Geological Survey Contact_Position: Information Office Contact_Address: Address_Type: mailing and physical address Address: 615 East Peabody Drive City: Champaign State_or_Province: Illinois Postal_Code: 61820 Country: USA Contact_Voice_Telephone: 217-333-4747 Contact_TDD/TTY_Telephone: 217-785-0211 Contact_Facsimile_Telephone: 217-244-0802 Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: none Metadata_Use_Constraints: none